Finding the Fourth Proportional to 10,143.95, 13,998.72 and 5,667.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.95 : 13,998.72 = 5,667.89 : x
2. Step 2: Convert to fraction form
   10,143.95/13,998.72 = 5,667.89/x
3. Step 3: Cross multiply
   10,143.95x = 13,998.72 × 5,667.89
4. Step 4: Simplify right side
   10,143.95x = 79,343,240.10
5. Step 5: Solve for x
   x = 79,343,240.10/10,143.95
6. Step 6: Final answer
   x = 7,821.73